The mother and mother-in-law of Russian opposition leader Alexei Navalny were among mourners who brought flowers to his grave in Moscow on Saturday . It comes a day after thousands turned his funeral into one of the largest displays of dissent . Three people were killed, eight wounded and six still missing after a Russian drone crashed into an apartment block in Ukraine’s southern port city of Odesa . The German defence ministry is checking whether a confidential videoconference on the Ukraine war had been wiretapped .